%% @author Marc Worrell <marc@worrell.nl>
%% @copyright 2010-2024 Marc Worrell
%% @doc 'escapexml' filter, escape a value for output in XML
%% @end

%% Copyright 2010-2024 Marc Worrell
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.

-module(filter_escapexml).
-moduledoc("
Escape the value for insertion in xml output.

For example:


```django
{{ value|escapexml }}
```

When the value is `<hel'lo\\>` then the output is `&#60;hel&#39;lo&#62;`.
").
-export([escapexml/2]).

escapexml(Input, Context) when is_map(Input) ->
    JSON = z_json:encode(Input),
    escapexml(JSON, Context);
escapexml(B, Context) ->
    z_xml:escape(B, Context).
